Dead Maverick Hybrid with <2000 miles

[Hamrich]

I used to get the deep sleep mode intermittently from February through March. The truck would start fine, and I thought maybe it was the dash cam with parking mode that was draining the battery. So I disabled the parking mode and stopped getting the deep sleep notifications. It's been working fine until yesterday when the truck had zero power like others have experienced on this forum.

Jump started it, took it immediately to the dealership, and on the way there I got a check engine light with the message "The powertrain control module has detected the power relay de-energized earlier than expected." The truck was running purely on HEV mode, no combustion engine at all. Technician checked the battery and it was in excellent condition, so he suspects that it's the known electrical issue that HEV Mavericks have. But I probably won't get my truck back for 2 weeks

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[fourwheelsandadream]

Oof do you at least get a rental in the mean time?

 

[skinnyboy]

I used to get the deep sleep mode intermittently from February through March. The truck would start fine, and I thought maybe it was the dash cam with parking mode that was draining the battery. So I disabled the parking mode and stopped getting the deep sleep notifications. It's been working fine until yesterday when the truck had zero power like others have experienced on this forum.

Jump started it, took it immediately to the dealership, and on the way there I got a check engine light with the message "The powertrain control module has detected the power relay de-energized earlier than expected." The truck was running purely on HEV mode, no combustion engine at all. Technician checked the battery and it was in excellent condition, so he suspects that it's the known electrical issue that HEV Mavericks have. But I probably won't get my truck back for 2 weeks

That's a downer . Hopefully not too long for the repair. Was it an issue with the wiring harness that caused the failure?

Cheers.

 

[Scupking]

Ford needs to figure this out and issue a TSB. Seems like once a week someone is having this issue...

 

[MAVRICK]

I used to get the deep sleep mode intermittently from February through March. The truck would start fine, and I thought maybe it was the dash cam with parking mode that was draining the battery. So I disabled the parking mode and stopped getting the deep sleep notifications. It's been working fine until yesterday when the truck had zero power like others have experienced on this forum.

Jump started it, took it immediately to the dealership, and on the way there I got a check engine light with the message "The powertrain control module has detected the power relay de-energized earlier than expected." The truck was running purely on HEV mode, no combustion engine at all. Technician checked the battery and it was in excellent condition, so he suspects that it's the known electrical issue that HEV Mavericks have. But I probably won't get my truck back for 2 weeks

I posted the response below in a related thread ... regardless of how the 12v factory is testing, I would ask for a 12v battery warranty replacement ... a battery with a single bad cell may consistently test well but will still periodically crap out.

The message: "The powertrain control module has detected the power relay de-energized earlier than expected." is in essence saying that the 12v battery level is too low (probably <3v) to maintain relay contact and/or activate the relay so that the HEV can power the traction of the vehicle at startup.

Another potential single point of failure is the relay itself.

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Did you get a "Deep Sleep" message (through the "FordPass" app)?

Two days after taking delivery, I experienced the same condition you're describing after I got the dreaded "Deep Sleep" message.

I put the 12v battery on a drip charger (twice) for 48 Hrs and it would read 14+ volts after charging but it would be totally depleted (reading <3v) after one start. After I got tired of doing this, I used a boost pack to get the vehicle rolling and took it to the dealer. As I drove to the dealer I could see (through a cigarette lighter adapter battery readout) the 12V battery losing charge.

I told the dealer that when I got the vehicle back, I would drive the vehicle around the dealer property and every ten minutes I would stop and start the vehicle to make sure he problem was solved ... they immediately told me they would replace the 12v battery under warranty.

They replaced the (Made in Mexico/ Ford branded) battery with a (Made in Mexico/ "Motorcraft" branded) battery.

To my surprise, the 12v replacement battery is only 470 CCA ... don't know the CCA of the original 12v factory battery.

 

[KevCuRaoi]

I posted the response below in a related thread ... regardless of how the 12v factory is testing, I would ask for a 12v battery warranty replacement ... a battery with a single bad cell may consistently test well but will still periodically crap out.

The message: "The powertrain control module has detected the power relay de-energized earlier than expected." is in essence saying that the 12v battery level is too low (probably <3v) to maintain relay contact and/or activate the relay so that the HEV can power the traction of the vehicle at startup.

Another potential single point of failure is the relay itself.

------------------------------------------

Did you get a "Deep Sleep" message (through the "FordPass" app)?

Two days after taking delivery, I experienced the same condition you're describing after I got the dreaded "Deep Sleep" message.

I put the 12v battery on a drip charger (twice) for 48 Hrs and it would read 14+ volts after charging but it would be totally depleted (reading <3v) after one start. After I got tired of doing this, I used a boost pack to get the vehicle rolling and took it to the dealer. As I drove to the dealer I could see (through a cigarette lighter adapter battery readout) the 12V battery losing charge.

I told the dealer that when I got the vehicle back, I would drive the vehicle around the dealer property and every ten minutes I would stop and start the vehicle to make sure he problem was solved ... they immediately told me they would replace the 12v battery under warranty.

They replaced the (Made in Mexico/ Ford branded) battery with a (Made in Mexico/ "Motorcraft" branded) battery.

To my surprise, the 12v replacement battery is only 470 CCA ... don't know the CCA of the original 12v factory battery.

Ford will only cover battery replacement under warranty if it fails a battery test on one of two testers approved by Ford. Or if it is leaking.
Every signal battery warranty claim is manually checked by someone to make sure the two battery codes given by the tester show an appropriate failure.

If the battery didn't test bad on the tester, the dealership can't submit a warranty claim. So it either tested bad later or they just ate it.

470 CCA is the correct 12v battery for the Hybrid Maverick.

 

[MAVRICK]

Ford will only cover battery replacement under warranty if it fails a battery test on one of two testers approved by Ford. Or if it is leaking.
Every signal battery warranty claim is manually checked by someone to make sure the two battery codes given by the tester show an appropriate failure.

If the battery didn't test bad on the tester, the dealership can't submit a warranty claim. So it either tested bad later or they just ate it.

470 CCA is the correct 12v battery for the Hybrid Maverick.

Or they knew it would fail based on recent data reported to/ by Ford.

I realize that in a HYBRID, the 12v battery may have a lighter load but IMHO, 470 CCA is somewhat under powered and probably a compromise decision based on financial criteria.

 

[SLINGSHOT]

The old (like me) rule of thumb was 1 CCA per cubic inch. A 470CCA should start a mid 70s V8 easily. Notice SHOULD is good tune on a warm summer day. At 20 below zero, you have about the same charge in your car battery that you do in a flashlight.

 

[Hamrich]

Oof do you at least get a rental in the mean time?

No rental or loaner. I work from home so it's not a huge deal, but still disappointing

 

[Jemers22]

Looks like I will be upgrading to a good AGM of higher CCA rating from all the posts I've seen. Doing so on my 14 Prius boosted the range as the battery didn't needed to be charged as often, reducing the load on the ICE...

 

[Tundra2Maverick(?)]

I used to get the deep sleep mode intermittently from February through March. The truck would start fine, and I thought maybe it was the dash cam with parking mode that was draining the battery. So I disabled the parking mode and stopped getting the deep sleep notifications. It's been working fine until yesterday when the truck had zero power like others have experienced on this forum.

Jump started it, took it immediately to the dealership, and on the way there I got a check engine light with the message "The powertrain control module has detected the power relay de-energized earlier than expected." The truck was running purely on HEV mode, no combustion engine at all. Technician checked the battery and it was in excellent condition, so he suspects that it's the known electrical issue that HEV Mavericks have. But I probably won't get my truck back for 2 weeks

Hybrid Lariat - 5 months and 4500 miles of flawless performance. No "Deep Sleep" messages or any type of warnings. Yesterday, I drove 10 miles, parked for 15 minutes, got back in it and it was as dead as a door nail. No recognition of the keyless fob and no reaction to door code. I put a new battery in the fob; still nothing. From reading this Forum, I told myself, "Aw s!*t, dead Maverick!". Knowing what lay ahead, and being totally pissed and extremely disappointed, I called Ford Roadside Assistance to begin the process. He jump started it with a booster, but after I turned it off, it was again completely dead. He jumped it again, and I headed straight to the Ford Dealer and parked it in the Service Lane. After driving 20 miles, it was completely dead again. Today the Ford Service Advisor said that the battery looked ok, and they are checking everything else for Hybrid problem possibilities. I should have an update tomorrow and will continue to update this thread.

FYI - no dash cam, kids with USB's, accessories, and I did not connect or use the Ford Pass Remote.

 

[Automate]

The old (like me) rule of thumb was 1 CCA per cubic inch. A 470CCA should start a mid 70s V8 easily. Notice SHOULD is good tune on a warm summer day. At 20 below zero, you have about the same charge in your car battery that you do in a flashlight.

The 12V battery of the Hybrid does NOT need to run a starter. All it needs to do is power up the computers and pull in a relay for the high voltage battery (~400V). The high voltage battery is what runs the motor that starts the engine.

 

[SLINGSHOT]

The 12V battery of the Hybrid does NOT need to run a starter. All it needs to do is power up the computers and pull in a relay for the high voltage battery (~400V). The high voltage battery is what runs the motor that starts the engine.

I did NOT say that anywhere. My RAV's cousin, the RAV hybrid, works the same way and there are a lot of posts about no start on the RAV forum because the 12 volt goes flat.

 

[Tundra2Maverick(?)]

The 12V battery of the Hybrid does NOT need to run a starter. All it needs to do is power up the computers and pull in a relay for the high voltage battery (~400V). The high voltage battery is what runs the motor that starts the engine.

That is a great point and you are right! I am a shade tree mechanic, but cannot figure out the hybrid to save my life. When my Maverick Hybrid died, the Roadside Assistance jumped it under the hood at a relay box. The jump did not start the gasoline engine, it just turned on the "dead" electric system. From there, I was able to push the Start Button. The gasoline engine still did not start, but all electrical systems were running. I pushed the accelerator, which started the gasoline engine. I wish that this thing would just run, because I hate looking under the hood!

 

[Powerstroke46]

Became a member of the dead maverick hybrid club today,just about the same scenario that everyone else has had. I believe our engineers at ford really need to figure this electrical issue out,and spread the word to our local dealers.

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